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Cummins 3.9 Fuel Injector 2008-2011: OEM 4089469RX ( Set of 6 )

CUMMINS 3.9 FUEL INJECTOR 2008-2011: OEM 4089469RX ( SET OF 6 )

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,499.70

CORE CHARGE:

$900.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER4089469RX
PART TYPEFuel Injector
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPE3.9
YEAR2008-2011
PART NUMBER4089469RM-SET
APPLICATION NOTESTier 2

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Fuel Injector, Tamerx part number 4089469RM-SET ( OEM Part Number 4089469RX ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Cummins 3.9, production years 2008-2011, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM4089469RX
Additional OEM4089469, 4089469RX

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode
WEIGHT108.00 LBS

SHIPPING OPTIONS

Ship Weight : 108.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


This set of six OEM 4089469RX fuel injectors is designed for Cummins 3.9L engines manufactured between 2008 and 2011, delivering consistent fuel delivery and precise injection timing. Each injector is built to original equipment specifications, ensuring a direct fit and smooth integration with the engine’s fuel system. Commonly found in light-duty commercial and industrial applications, these components support efficient combustion and stable engine function. The design allows for straightforward installation, reducing downtime during maintenance. This injector set is a dependable solution for preserving fuel system working conditions in diesel-powered equipment.

FITMENT CHART

YEARMAKEENGINE(S)
2008Cummins 3.9
2009Cummins 3.9
2010Cummins 3.9
2011Cummins 3.9

PEOPLE ALSO ASKS | BLOG(S)

Fuel injectors are critical components in any diesel engine, ensuring the precise delivery of fuel for efficient combustion. The Cummins 3.9 Fuel Injector 2008-2011: OEM 4089469RX (Set of 6) is specifically engineered for Cummins 3.9L engines, providing reliability and durability. Replacing worn or failing injectors with this OEM set is essential to maintaining optimal engine performance and fuel efficiency.

The OEM 4089469RX fuel injector is crafted to meet the high demands of Cummins engines, ensuring consistent performance and long-lasting reliability. Here are the key benefits of this product:

  • Exact Compatibility
    •  Designed to fit Cummins 3.9L engines from 2008 to 2011, ensuring seamless integration and proper operation.
  • Precise Fuel Delivery
    • Provides accurate fuel injection to promote efficient combustion, reducing waste and improving overall engine efficiency.
  • Durable Construction
    • Manufactured from high-quality materials to withstand high pressures and harsh operating conditions.
  • Enhanced Engine Reliability
    • Reduces the risk of misfires, inconsistent power output, and excessive emissions, contributing to smoother engine operation.
  • Easy Installation
    • Built to meet OEM specifications, simplifying the replacement process and minimizing downtime.

Using the Cummins 3.9 Fuel Injector 2008-2011: OEM 4089469RX (Set of 6) helps ensure your engine continues to run efficiently and reliably. Regular maintenance with genuine replacement parts like this injector set can prevent costly repairs and prolong the lifespan of your diesel engine.

At TamerX Diesel Parts, we are dedicated to providing high-quality components for your diesel engine needs. Explore our inventory today to purchase the OEM 4089469RX injector set and discover other trusted parts to keep your Cummins 3.9L engine in peak condition.

Fuel injectors play a critical role in ensuring optimal engine performance by delivering the precise amount of fuel for combustion. Over time, dirt, carbon deposits, and debris can clog injectors, leading to reduced efficiency and performance. Cleaning your fuel injectors regularly is key to maintaining a smooth-running engine. But what is the best way to clean them effectively?

Here are the best methods for cleaning fuel injectors:

  • Use a Fuel Injector Cleaner Additive

    • Add a high-quality fuel injector cleaner to your fuel tank as part of routine maintenance. This method helps dissolve minor deposits and prevents buildup over time.

  • On-Vehicle Cleaning

    • A professional on-vehicle cleaning uses specialized equipment to clean injectors without removing them. It involves connecting a pressurized cleaning solution directly to the fuel rail for a thorough cleaning.

  • Remove and Clean Injectors Manually

    • For severe clogging, remove the injectors and clean them manually using ultrasonic cleaning tools and a solvent designed for fuel systems. This method provides a deep clean and restores injectors to like-new condition.

  • Replace Fuel Filters

    • A clogged fuel filter can contribute to dirty injectors. Replacing the fuel filter during cleaning ensures contaminants don’t reach the injectors again.

  • Perform Regular Maintenance

    • Consistent use of clean, high-quality fuel and periodic use of injector cleaners can minimize buildup and extend the time between cleanings.

  • Consult a Professional

    • If injector issues persist or cleaning doesn’t resolve the problem, seek help from a professional mechanic. They can assess whether cleaning is sufficient or if replacement is necessary.

Regular cleaning keeps your fuel injectors functioning properly, improves fuel efficiency, and ensures smooth engine performance.

Cleaning fuel injectors is an essential part of vehicle maintenance. Whether using a fuel system cleaner or opting for professional cleaning, keeping your injectors free from deposits ensures your engine runs efficiently. By addressing injector issues early and performing regular maintenance, you can save on fuel costs and avoid potential engine problems. A clean fuel system means a healthier, more reliable vehicle.

Yes, inconsistent or failed injection can cause cylinder imbalance, rough operation, and loss of power.

Yes, high return flow may result in insufficient rail pressure during cranking, leading to extended start times.

A diagnostic scan tool can detect cylinder imbalance by measuring fuel correction or contribution data.

Yes, long idling can lead to carbon buildup on the nozzle tip, affecting spray pattern and combustion.

Cummins Fuel Injectors